Ferromagnetic CeSi1.2Ga0.8 alloy: Study on magnetocaloric and thermoelectric properties
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F22%3A10250355" target="_blank" >RIV/61989100:27740/22:10250355 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27640/22:10250355
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0304885321010441" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0304885321010441</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jmmm.2021.168833" target="_blank" >10.1016/j.jmmm.2021.168833</a>
Alternative languages
Result language
angličtina
Original language name
Ferromagnetic CeSi1.2Ga0.8 alloy: Study on magnetocaloric and thermoelectric properties
Original language description
We present the magnetic, specific heat, electrical resistivity, and thermoelectric power measurements for the intermetallic compound CeSi1.2Ga0.8. This composition belongs to the series CeSi2-xGax, which exhibits diverse magnetic orderings and different crystallographic structures depending on the substitution level x. It has been previously suggested that for 0.0 < x < 1.3 the compounds crystallize in the alpha-ThSi2 type structure and for 0.7 < x < 1.3 they order ferromagnetically below 14 K. Our complementary studies for x = 0.8 reveal that it is a complex system due to the Kondo scattering competing with the RKKY interactions. The transition from the paramagnetic to the ferromagnetic state takes place at T-C = 12.5(1) K. Moreover, the Seebeck coefficient and electrical resistivity show not only an anomaly related to the magnetic transition, but also a broad maximum at-90 K related to the crystal field effect. The case of x = 0.8 is of special interest as it is at the crossing of the characteristic temperatures, i.e. T-ord (magnetic ordering temperature)similar to & nbsp; T-K (Kondo temperature) similar to 10 K. Additionally, ab initio electronic structure calculations were performed allowing us to determine phase stability, (revealing two stable phases -alpha-GdSi2-type and alpha-ThSi2-type structures) as well as spin and orbital moment decomposition on Ce-states for both considered structures.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/EF16_013%2F0001791" target="_blank" >EF16_013/0001791: IT4Innovations national supercomputing center - path to exascale</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of magnetism and magnetic materials
ISSN
0304-8853
e-ISSN
1873-4766
Volume of the periodical
547
Issue of the periodical within the volume
April
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
nestrankovano
UT code for WoS article
000777035500005
EID of the result in the Scopus database
2-s2.0-85119923240